package com.zyx.spring5msb.aopbasic.service;

/**
 * @author Yaxi.Zhang
 * @since 2021/9/28 13:38
 */
public interface Calculator {
    int add(int i, int j);
    int sub(int i, int j);
    int mul(int i, int j);
    int div(int i, int j);
}
